Chlorobenzene

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste numbers U037, F002, and D021 must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.

SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.

Product: Burn in a chemical incinerator equipped with an afterburner and scrubber but exert extra care in igniting as this material is highly flammable. Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material.; Contaminated packaging: Dispose of as unused product.

Chlorobenzene is a waste chemical stream constituent which may be subjected to ultimate disposal by controlled incineration. Preferably after mixing with another combustible fuel; care must be exercised to assure complete combustion to prevent the formation of phosgene; an acid scrubber is necessary to remove the halo acids produced.

A potential candidate for liquid injection incineration at a temperature range of 650 to 1,600 deg C and a residence time of 0.1 to 2 seconds. A potential candidate for rotary kiln incineration at a temperature range of 820 to 1,600 deg C and residence times of seconds for liquids and gases, and hours for solids. A potential candidate for fluidized bed incineration at a temperature range of 450 to 980 deg C and residence times of seconds for liquids and gases, and longer for solids.

Chlorobenzene may be disposed of by atomizing in a suitable combustion chamber equipped with an appropriate effluent gas cleaning device. (Afterburner and alkali scrubber). Recommendable method: Incineration.

The thermolysis of Aroclor-1248 was undertaken in a spiralized quartz tubular flow reactor with hydrogen gas inflow at 221 mmol/hr. Temperatures were increased from 715 to 875 deg C over a series of four runs. The duration of each run was 40 to 65 minutes. The product was collected in a trap cooled with liquid nitrogen and analyzed by gas/liquid chromatography. Model runs were also undertaken with chlorobenzene, 1,2,4-trichlorobenzene, and biphenyl at temperatures decreasing over a series of four runs from 875 degrees to 750. Conversions of PCBs were approximately 10, 28, 70, and greater than 99.9% after runs one through four, respectively. Dichlorobenzene and trichlorobenzene accounted for approximately 6% of the Aroclor feed. Chlorobenzene and biphenyl were also products, although the determination of chlorobenzene was obscured by its use as diluent. Methane and small amounts of ethylene, ethane, ethane, and traces of ethyne were also formed. In model runs with chlorobenzene, trichlorobenzene, and biphenyl the amount of biphenyl left was only 0.75%. Dechlorination was again approximately 95%, leaving only traces of 1,2,4-trichlorophenyl. Increasing temperature to 925 degrees increased dechlorination to 99.95%.